* {
    margin: 0;
    padding: 0;
}

body,
html {
    width: 100%;
    height: 100%;
    position: relative;
    min-width: 1300px;
    font: 14px/1.5 "PingFang SC", "微软雅黑", "Microsoft YaHei", Helvetica, "Helvetica Neue", Tahoma, Arial, sans-serif;
}

/*a去掉超链接下划线，修改字体颜色*/
a{
    text-decoration: none;
    color: black;
}

.banner_box{
    height:546px;
    /*    background-color: salmon;*/
}
.banner_box .g_banner{
    width: 1200px;
    height: 382px;
    margin: 0 auto;
    /*border-radius: 8px;*/
    /*background-color: #ffffff;*/
    position: relative;
    top: 30px;
}
.banner_box .g_banner .submenu{
    width: 256px;
    height: 382px;
    background-color: #39364d;
    position: relative;
    float: left;
    border-radius: 8px 0 0 0;
}
.item_a{
    height: 50px;
    /*background-color: darkkhaki;*/
    margin-top: 16px;
}
.item_b{
    height: 50px;
    /*background-color: darkkhaki;*/
}
.item_a .title{
    margin-left: 10px;
    color: white;
    line-height: 50px;
}
.item_b .title{
    margin-left: 10px;
    color: white;
    line-height: 50px;
}
.sub_title{
    font-size: 12px;
    color: white;
}

.item_a .imv2-arrow1_r{
    margin-left: 10px;
    right: 4px;
    top: 16px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 16px;
    line-height: 50px;
}
.item_b .imv2-arrow1_r{
    margin-left: 10px;
    right: 4px;
    top: 16px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 16px;
    line-height: 50px;
}

.imv2-arrow1_r::after{
    content: "\003E";
}

.layui-carousel{
    width: 944px;
    height: 382px;
    float: right;
}
.lunbo_img{
    width: 944px;
    height: 382px;
}
.container{
    width: 944px;
    height: 382px;
    float: left;
}
.img_01{
    width: 944px;
    height: 382px;
}
.banner_box .system-class-show{
    width: 1200px;
    height: 100px;
    background-color: #dbe0e8;
    margin: 0 auto;
    position: relative;
    top: 30px;
    border-radius: 0 0 8px 8px;
}
.system-class-show .show-box{
    display: inline-block;
    width: 220px;
    height: 50px;
}
.system-class-show .show-box .describe{
    width: 120px;
    height: 45px;
    float: left;
}
.show-box img{
    float: left;
    width: 55px;
    height: 55px;
    margin-top: 25px;
    margin-left: 25px;
}
.describe h4{
    margin-left: 5px;
    margin-top: 30px;
}
.describe p{
    margin-top: 7px;
    font-size: 5px;
    margin-left: 4px;
}
.system-class-show .line{
    float: right;
    height: 36px;
    border: 1px solid #ffffff;
    margin-right: 75px;
    margin-top: 33px;
}
.system-class-show .mini_title{
    width: 40px;
    height: 16px;
    float: right;
    margin-right: -55px;
    font-size: 5px;
    margin-top: 35px;
}
.system-class-show .more{
    width: 30px;
    height: 16px;
    float: right;
    margin-right: -48px;
    font-size: 5px;
    margin-top: 50px;
}
.Hot{
    height: 698px;
    background-color: #eeeeee;
}
.center_top_body{
    width: 1200px;
    height: 36px;
    margin: 0 auto;
    position: relative;
    top: 40px;
    /*background-color: yellow;*/
}
.center_top_body .left_head img{
    width: 167px;
    height: 29px;
}
.Hot .center_body{
    width: 1176px;
    height: 600px;
    margin: 0 auto;
    margin-top: 65px;
    /*background-color: #0a53be;*/
    padding-left: 24px;
}
.center_body .item{
    position: relative;
    width: 270px;
    height: 272px;
    margin: 0 24px 24px 0;
    background: #FFFFFF;
    box-shadow: 0 6px 10px 0 rgb(95 101 105);
    border-radius: 8px;
    float: left;
    transition: all .2s;
}
p {
    margin: 12px;
}
.title_course{
    margin-left: 10px;
    margin-top: 8px;
    height: 40px;
}
.difficulty{
    color: #adacac;
    font-size: 12px;
    /*margin-top: 20px;*/
    margin-left: 10px;
}
.tag{
    background-color: rgba(242, 13, 13, 0.6);
    color: #fff;
    line-height: 1;
    padding: 2px 5px;
    border-radius: 2px;
}
.price{
    color: red;
    font-size: 10px;
    font-weight: bold;
}
.price_1{
    display: inline-block;
    font-size: 10px;
    color: #9199A1;
    line-height: 18px;
    text-decoration: line-through;
}
.center_body a img{
    width: 270px;
    height: 152px;
    border-radius: 8px 8px 0 0;
}
.center_body .item .bottom{
    height: 20px;
    margin-left: 10px;
    margin-top: 15px;
}
.Tap{
    height: 698px;
    background-color: #ffffff;
}
.Tap .center_body{
    width: 1176px;
    height: 600px;
    margin: 0 auto;
    margin-top: 25px;
    /*background-color: #0a53be;*/
    padding-left: 24px;
}
.Limited_time_puzzle{
    height: 450px;
    background-color: #eeeeee;
}
.Limited_time_puzzle .center_body{
    width: 1176px;
    height: 350px;
    margin: 0 auto;
    margin-top: 27px;
    /*background-color: #0a53be*/;
    padding-left: 24px;
}
.footer{
    height: 133px;
    background-color: #3dd5f3;
}